Bis-tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes

Kuo, Hsin-Hung; Chen, Yi-Ting; Devereux, Leon R.; Wu, Chung-Chih; Fox, Mark A.; Kuei, Chu-Yun; Chi, Yun; Lee, Gene-Hsiang

Abstract

Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE(x,y)) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m−2.

Citation

Kuo, H., Chen, Y., Devereux, L. R., Wu, C., Fox, M. A., Kuei, C., …Lee, G. (2017). Bis-tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes. Advanced Materials, 29(33), Article 1702464. https://doi.org/10.1002/adma.201702464

• Journal Article Type: Article
• Acceptance Date: May 22, 2017
• Online Publication Date: Jun 21, 2017
• Publication Date: Sep 6, 2017
• Deposit Date: May 22, 2017
• Publicly Available Date: May 23, 2017
• Journal: Advanced Materials
• Print ISSN: 0935-9648
• Electronic ISSN: 1521-4095
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 29
• Issue: 33
• Article Number: 1702464
• DOI: https://doi.org/10.1002/adma.201702464
• Public URL: https://durham-repository.worktribe.com/output/1378422